In StockSave 9%
Ultradyne USA 5.56MM/223REM MERCURY Brake Fits AR-15 Rifles w/ 1/2x28 Threads, Black Stainless Steel - UD10670
Sold byPalmetto State Armory•Posted May 18, 2026
Compare prices for Ultradyne Mercury Compensator Muzzle Brake with Timing Nut 5.56mm 1/2"-28 Thread .865 Outside Diameter Stainless Steel Nitride$123.99
$136.99
You save $13.00 (9% off)
Price and stock data refresh continuously from Palmetto State Armory.
Deal Summary
- Currently in stock.
- Caliber: 223/5.56
- Category: parts
Price History
Deal Details
MERCURY has been meticulously engineered for the .223/5.56 caliber to provide superior recoil reduction and neutralize muzzle rise with a smooth, balanced release of blast energy. Progressive 90 side ports vent combusting gases at intervals that spread out the recoil impulse for efficient, accurate follow-up shots. Like all Ultradyne muzzle devices, a timing nut is included for easy installation.Features:1/2-28 thread pitch416 stainless steelNitride finishIncludes timing nut
UPC Price Comparison
Live retailer pricing for UPC 851019008279 using the same comparison feed as the compare tool.
Found 6 retailers carrying this product
Lowest Price: $80.72
Highest Price: $123.99
You Save: $43.27
Avg Discount: 7% off
ULTRADYNE UD10670 Mercury Compensator 223 Rem,5.56x45mm NATO Black Nitride 416 Stainless Steel 1/2-28 tpi
Ultradyne UsaBattleHawk Armory
$80.72$120.00Save 33%
View at BattleHawk Armory
Ultradyne USA MERCURY Brake, 5.56MM/223REM, Fits AR-15s with 1/2X28 Threads, Black, 3.1 oz., 416 Stainless Steel, Includes Shrouded Timing Nut UD10670
Ultradyne UsaGritrSports
$85.63
View at GritrSports
Ultradyne Mercury Compensator Muzzle Brake with Timing Nut 5.56mm 1/2"-28 Thread .865 Outside Diameter Stainless Steel Nitride
UltradyneMidwayUSA
$95.99
View at MidwayUSA
Ultradyne Mercury Compensator 5.56 NATO 1/2x28 Thread Pattern
UltradyneGrabAGun
$116.99$120.00Save 3%
View at GrabAGun
Ultradyne USA MERCURY Brake, 5.56MM/223REM, Fits AR-15s with 1/2X28 Threads, Black, 3.1 oz., 416 Stainless Steel, Includes Shrouded Timing Nut UD10670
UltradyneHinterland Outfitters
$122.95
View at Hinterland OutfittersUltradyne USA 5.56MM/223REM MERCURY Brake Fits AR-15 Rifles w/ 1/2x28 Threads, Black Stainless Steel - UD10670
UltradynePalmetto State Armory
$123.99$136.99Save 9%
View at Palmetto State Armory